I’ve sat in films recently silently annoyed with people doing this and wondered about their critical thinking in how this could possibly be okay ( when they are actually told to put phones away).
Turns out people either think it doesn’t apply to them (because they are bored/didn't want to see the film/have turned their screen brightness down).
Don’t go to the cinema if you can’t not be quiet and turn your phone off.
if you find yourself watching a film you don’t like either leave (and meet friends afterwards) or sit it out because it’s not very long (e.g. if your children want to see something).
Don’t think oh I’ll just go on my phone, it’s only me and doesn’t affect anyone else. Your screen being on in a dark cinema is bothering everyone.